package cn.tedu;

import java.sql.*;

public class Demo03 {
    //增删改查操作
    public static void main(String[] args) throws SQLException {
        Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/empdb?characterEncoding=utf8&serverTimezone=Asia/Shanghai","root","root");
        Statement s = conn.createStatement();
       /* s.executeUpdate("insert into emp(name) values('tom')");*/
        //s.executeUpdate("insert into emp(name) values('Jack')");
        //s.executeUpdate("update emp set name='jerry' where name='tom'");
         //s.executeUpdate("delete from emp where name='jerry'");
         ResultSet rs = s.executeQuery("select name,sal from emp");

         while (rs.next()){
            /* String name = rs.getString("name");
             double sal = rs.getDouble("sal");*/
             String name = rs.getString(1);
             double sal = rs.getDouble(2);
             System.out.println(name+":"+sal);
         }
        conn.close();
    }
}
